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Rating


Our testers conducted dozens of tests of the chess engine in the month of May, which allowed us to add over 18 thousand games to the CEDR game database. As a result, the latest rating was calculated based on a total of 664,406 games.

The list only includes chess engines that have played at least 500 games in our tests.
The game database has been "cleaned" of games that had less than 10 moves.



New Chess Engines Diary Ranking CEDR - 01.06.2025 (TOP-64)
Chess Engines Diary Rating CEDR – 01.06.2025
generated with Ordo 0.9.9 (anchor Critter 1.6a with 3230)
All 664.406 games, Time:3’+3” Minimum 500 games
Pl Engine CEDR Score Games (%)
1 Stockfish 20241208 3766.4 343.00 624 54.97

Stockfish 17.1 3754.2 1550.00 2868 54.04
2 Obsidian 15.04 SE 3734.7 597.50 1080 55.32
3 Alexandria 8.0.0 JA 3723.6 830.00 1550 53.55
4 PlentyChess 4.0.1 3719.5 1069.50 2019 52.97
5 Dragon 3.3 3719.2 5341.50 10343 51.64
6 Berserk 20250307b 3715.4 560.50 1063 52.73
7 Caissa 1.22 3715.3 346.50 664 52.18
8 Integral 7.0.0 JA 3713.6 1080.50 1990 54.30
9 Lc0 0.31.0 3704.9 343.50 654 52.52
10 Viridithas 17.0.0 3695.7 742.00 1084 68.45
11 Horsie 1.0.6 JA 3694.8 1149.00 2203 52.16
12 Lizard 11.2 3683.3 1063.00 2068 51.40
13 RubiChess 20240817 3681.8 2368.50 4590 51.60
14 Ethereal 14.25 3678.8 3642.00 6681 54.51
15 Motor 0.8.0 JA 3673.1 1676.00 3427 48.91
16 Clover 8.0.1 3670.4 701.00 1447 48.45
17 Quanticade Fenrir 1.0 JA 3666.8 288.00 601 47.92
18 Stormphrax 6.0.0 3662.7 1018.50 2068 49.25
19 Devre 6.39 JA 3661.0 660.00 1290 51.16
20 Booot 7.4 3658.5 821.00 1701 48.27






21 Seer 2.8.0 JA 3655.5 463.50 1016 45.62
22 Rebel EAS 3652.7 730.00 1356 53.83
23 Chess-System-Tal-2 3646.1 3955.00 7651 51.69
24 Uralochka 3.42 dev7 3645.9 865.50 1737 49.83
25 Titan 1.1.0 3645.1 1711.50 3425 49.97
26 Revenge 4.0 3643.4 911.00 1948 46.77
27 Akimbo 1.1.0 JA 3636.9 441.00 825 53.45
28 Arasan 25.0 3634.1 676.50 1300 52.04
29 Starzix 6.0 3632.6 1315.00 3070 42.83
30 Velvet 8.1.0 3630.0 275.00 616 44.64
31 RofChade 3.1 3628.9 2171.00 4122 52.67
32 Spaghet BologNNese 1.0 3628.1 605.00 1093 55.35
33 Igel 3.6.0 JA 3626.1 335.50 762 44.03
34 Dragon free 3621.0 971.50 1712 56.75
35 Koivisto 9.2 3616.0 2640.50 5368 49.19
36 Clarity 7.2.0 3615.3 457.50 808 56.62
37 Peacekeeper 3.01 3610.9 799.50 1645 48.60
38 Elixir 3.0 JA 3589.5 433.50 592 73.23
39 Fire 10 3585.9 470.00 1019 46.12
40 Altair 7.1.5 JA 3582.9 375.50 775 48.45






41 Cinder 0.1.4 3579.2 435.50 535 81.40
42 Tenax 1.0 3563.2 271.00 512 52.93
43 Slowchess 2.9 3563.1 1846.00 3888 47.48
44 Black Marlin 9.0 3555.3 423.00 952 44.43
45 Pawn 3.0 dev-f3e1fa8 JA 3554.0 323.00 558 57.89
46 Halogen 12.12.3 JA 3547.5 351.50 858 40.97
47 Superultra 2.0 3546.4 254.00 506 50.20
48 Minic 3.39 3522.9 453.50 1019 44.50
49 Carp 3.0.1 3521.1 1205.50 2313 52.12
50 Fritz 19 3517.2 241.50 612 39.46
51 Willow 4.0.0 3501.8 319.00 731 43.64
52 Wasp 7.00 3492.4 489.00 993 49.24
53 Equisetum 1.0 3488.8 317.50 587 54.09
54 Hiarcs 15.5 3485.1 543.50 1014 53.60
55 Rice 8.0.0 3479.0 440.00 964 45.64
56 Marvin 6.2.0 3457.8 439.00 691 63.53
57 Komodo 14.1 3457.1 478.50 1055 45.36
58 Nemorino 6.00 3453.9 449.50 929 48.39
59 Pedone 3.1 3448.8 385.00 845 45.56
60 Midnight 9 3445.2 538.00 1039 51.78
61 Smallbrain 7.0 3441.3 282.50 557 50.72
62 Patricia 4.0 JA 3431.3 204.50 642 31.85
63 Tucano 11.00.1 3408.0 349.50 640 54.61
64 Stash 35.26 JA 3398.8 397.00 780 50.90 


Rating CEDR – 01.06.2025 (Stockfish and clones)



	
	
	
	
	
	
	

		Rating CEDR – 01.06.2025 (Stockfish and clones)
		

	

		generated with Ordo 0.9.9 (anchor Critter 1.6a with 3230)
		

	

		All 664.406 games, Time:3’+3” Minimum 500 games
		

	

		Pl
		Engine
		CEDR
		Score
		Games
		(%)
	

	

		1
		Stockfish 20241208
		3766.4
		343.00
		624
		54.97
	

	

		2
		JigSaw 5.9
		3764.2
		1732.00
		2824
		61.33
	

	

		3
		SpecTral PB 071124
		3762.5
		921.00
		1687
		54.59
	

	

		4
		SF-PRO2 04.12.2024
		3762.3
		341.00
		555
		61.44
	

	

		5
		SF PB 120624
		3762.0
		299.00
		509
		58.74
	

	

		6
		CorChess 20240927
		3761.9
		685.50
		1200
		57.13
	

	

		7
		Polyfish 221009
		3761.8
		315.00
		520
		60.58
	

	

		8
		Killfish 021224
		3761.6
		786.00
		1483
		53.00
	

	

		9
		Stockfish 20241122 Ivec
		3761.1
		346.50
		592
		58.53
	

	

		10
		Dark SisTer 4
		3761.1
		304.00
		503
		60.44
	

	

		11
		Sailfish 4.0
		3760.9
		534.00
		1001
		53.35
	

	

		12
		BrainLearn 29
		3760.5
		625.00
		1126
		55.51
	

	

		13
		HypnoS 160524
		3760.3
		514.50
		936
		54.97
	

	

		14
		Yuliana 5.50
		3760.1
		1852.00
		3267
		56.69
	

	

		15
		Tactical Titan
		3759.3
		1057.00
		2010
		52.59
	

	

		16
		ShashChess 37
		3759.2
		1788.00
		3328
		53.73
	

	

		17
		Rems Sep24
		3758.8
		541.00
		917
		59.00
	

	

		18
		Artemis 4TR
		3758.5
		994.00
		1811
		54.89
	

	

		19
		Perelandra 2.0
		3758.5
		375.50
		645
		58.22
	

	

		20
		Deep Blue 20240518
		3758.5
		1407.50
		2689
		52.34
	

	

		

		

		

		

		

		

	

	

		21
		TROY 180525
		3758.0
		309.50
		556
		55.67
	

	

		22
		Marauders 3.9
		3757.9
		722.50
		1282
		56.36
	

	

		23
		Raid 3.6 TR
		3757.8
		4136.50
		7711
		53.64
	

	

		24
		Kookaburra 3.10
		3757.5
		1115.00
		2125
		52.47
	

	

		25
		Steel Fighter III
		3757.3
		770.00
		1300
		59.23
	

	

		26
		Fidelio 17
		3756.8
		640.50
		1156
		55.41
	

	

		27
		Nebula-vortex 1.0
		3756.8
		330.50
		534
		61.89
	

	

		28
		Yuliirma 4.0
		3756.7
		2104.50
		3832
		54.92
	

	

		29
		Yuli GM Pro 16
		3756.7
		3602.50
		6686
		53.88
	

	

		30
		Contact 12
		3756.7
		489.50
		832
		58.83
	

	

		31
		Private19sf
		3756.3
		1661.00
		3011
		55.16
	




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